The USS Apollo (AS-25) was an Aegir-class submarine tender constructed during World War II to support the United States Navy's submarine fleet. Laid down on June 24, 1943, by the Ingalls Shipbuilding Corporation in Pascagoula, Mississippi, she was launched on November 6, 1943, and sponsored by Mrs. James B. Hill. Initially placed in reduced commission on December 31, 1943, she was transferred to the Atlantic Basin Iron Works in Brooklyn for conversion into a submarine tender. She was recommissioned on September 29, 1944, following her conversion. Following her commissioning, Apollo underwent shakedown exercises off New London, Connecticut, and in Block Island Sound, where she prepared for active service by loading stores, spare parts, and equipment. Departing Connecticut on November 6, 1944, she transited the Panama Canal on November 13, and after a brief stop at San Diego, California, she proceeded to Pearl Harbor, arriving on December 10. She then sailed for Guam, Mariana Islands, arriving at Apra Harbor on December 21, where she began providing logistical and maintenance support to Pacific Fleet submarines. Apollo’s service at Guam lasted until July 10, 1945, after which she returned to Pearl Harbor. Her activities involved tending to submarines and supporting fleet operations during the final months of World War II. Following Japan's surrender, she headed back to the U.S., transiting the Panama Canal again on September 12, 1945, and arriving at New Orleans on September 16. She continued her voyage to Yorktown, Virginia, arriving on November 3, to unload ammunition, and then moved to New London, Connecticut, on November 8, where she helped place submarines of the 16th Fleet in inactive status. Apollo was placed in commission, in reserve, on October 16, 1946. She was decommissioned on February 12, 1947, and berthed at New London. Her name was struck from the Navy list on July 1, 1963, and she was transferred to the Maritime Administration for layup. Ultimately, she was sold for scrapping in 1974. The USS Apollo served as a vital logistical support vessel during WWII, exemplifying the crucial role of tenders in maintaining submarine operations across the Pacific theater.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.